Since the ball was not moving before it let Aiden's hand, the formula used to calculate the acceleration is
, where a is acceleration, v is velocity and t is the time. We put them in the formula and get
The acceleration is 490 m/s^2
Answer:
groups on and two have the highest reactivity
Explanation:
the farther you move to the right the more reactive the elements get
A special purpose nozzles that are often lowered through holes or other openings to the cellar of an occupancy are called cellar nozzles.
What is a nozzle:
A nozzle is a device in which steadily flowing fluid can be made to accelerate by a pressure drop along the duct in a cross-sectional area.
So when a fluid flows through a nozzle, its velocity increases continuously and pressure decreases continuously.
There are different types of tips like hollow cone, solid cone or flat fan.
The cellar nozzle (also called a Bresnan nozzle) is designed to be used under the surface the operator is standing on.
Hence,
The cellar nozzles are often lowered through holes or other opening to the cellar of an occupancy.
Learn more about nozzles here:
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The distance covered by the car is 39.9 m
Explanation:
Since the car is slowing at constant rate, it means that its acceleration is constant, therefore we can solve the problem by using the following suvat equation:
where
s is the distance covered
u is the initial velocity
v is the final velocity
t is the time elapsed
For the car in this problem, we have
u = 19 m/s (initial velocity)
v = 0 (final velocity)
t = 4.2 s (time elapsed)
Therefore, the distance covered is
Learn more about accelerated motion:
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Answer:
The answer is 1020 meters.
Explanation:
The values given by the problem are:
1. T= The falling time of the rock [Seconds]
2. H=The sound velocity constant [meter/second]
The Velocity normal formula is
V=H/T
340=H/3
340*3=H
This solution considers the physic of the traveling wave sound but not really the rock falling problem, because the problem ask for the height of the cliff not even more.